News Rover needs to make outgoing TCP/IP connectons to the following ports:

  25 = SMTP server for outgoing e-mail
  26 = Search server for MP3 Locator and File Locator
  80 = Search server for Message Locator
  110 = POP server for incoming e-mail
  119 = NNTP Usenet news server
  7520 = Check for new versions of News Rover

News Rover does not accept any incoming connections, so you are welcome to block any or all incoming connections.